Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens further satisfies specific conditions.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface Si.The first lens L1 is made of glass material, the second lens L2 is madeof plastic material, the third lens L3 is made of plastic material, thefourth lens L4 is made of plastic material, the fifth lens L5 is made ofglass material, the sixth lens L6 is made of plastic material, theseventh lens L7 is made of plastic material;

Here, the focal length of the camera optical lens is f, the focal lengthof the first lens L1 is f1, the refractive power of the first lens L1 isn1, the focal length of the third lens L3 is f3, the focal length of thefourth lens L4 is f4, the refractive power of the fifth lens L5 is n5,curvature radius of object side surface of the seventh lens L7 is R13,the curvature radius of image side surface of the seventh lens L7 isR14, and they satisfy the following condition: 1≤f1/f≤1.5, 1.7≤n1≤2.2,−2≤f3/f4≤2; 1.7≤n5≤2.2, 0.4≤(R13+R14)/(R13−R14)≤10.

Condition 1≤f1/f≤1.5 fixes the positive refractive power of the firstlens L1. If the lower limit of the set value is exceeded, although itbenefits the ultra-thin development of lenses, but the positiverefractive power of the first lens L1 will be too strong, problem likeaberration is difficult to be corrected, and it is also unfavorable forwide-angle development of lens. On the contrary, if the higher limit ofthe set value is exceeded, the positive refractive power of the firstlens L1 becomes too weak, it is then difficult to develop ultra-thinlenses. Preferably, the following condition shall be satisfied,1≤f1/f≤1.2.

Condition 1.7≤n1≤2.2 fixes the refractive power of the first lens L1,refractive power within this range benefits the ultra-thin developmentof lenses, and it also benefits the correction of aberration.Preferably, the following condition shall be satisfied, 1.7≤n1≤2.0.

Condition −2≤f3/f4≤2 fixes the ratio between the focal length f3 of thethird lens L3 and the focal length f4 of the fourth lens L4, a ratiowithin this range can effectively reduce the sensitivity of lens groupused in camera and further enhance the imaging quality. Preferably, thefollowing condition shall be satisfied, −1≤f3/f4≤1.

Condition 1.7≤n5≤2.2 fixes the refractive power of the fifth lens L5,refractive power within this range benefits the ultra-thin developmentof lenses, and it also benefits the correction of aberration.Preferably, the following condition shall be satisfied, 1.9≤n5≤2.2.

Condition 0.4≤(R13+R14)/(R13−R14)≤10 fixes the shape of the seventh lensL7, when the value is beyond this range, with the development into thedirection of ultra-thin and wide-angle lenses, problem like aberrationof the off-axis picture angle is difficult to be corrected. Preferably,the following condition shall be satisfied, 0.4≤(R13+R14)/(R13−R14)≤8.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens isf, the focal length of the first lens L1 is f1, the curvature radius ofthe object side surface of the first lens L1 is R1, the curvature radiusof the image side surface of the first lens L1 is R2 and the thicknesson-axis of the first lens L1 is d1, they satisfy the followingcondition: −6.19≤(R1+R2)/(R1−R2)≤−1.74, this condition reasonablycontrols the shape of the first lens, then the first lens caneffectively correct the spherical aberration of the system; if thecondition 0.25≤d1≤0.79 is satisfied it is beneficial for the realizationof ultra-thin lens. Preferably, the following condition shall besatisfied, −3.87≤(R1+R2)/(R1−R2)≤−2.17; 0.41≤d1≤0.63.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the second lens L2 is f2, the curvature radiusof the object side surface of the second lens L2 is R3, the curvatureradius of image side surface of the second lens L2 is R4 and thethickness on-axis of the second lens L2 is d3, they satisfy thefollowing condition: when the condition −9.75≤f2/f −2.30 is satisfied,the negative refractive power of the second lens L2 is controlled withinreasonable scope, the negative spherical aberration caused by the firstlens L1 which has positive refractive power and the field curvature ofthe system then can be reasonably and effectively balanced; thecondition 2.52 (R3+R4)/(R3−R4)≤10.52 fixes the shape of the second lensL2, when value is beyond this range, with the development into thedirection of ultra-thin and wide-angle lenses, problem like on-axischromatic aberration is difficult to be corrected; if the condition0.10≤d3≤0.29 is satisfied, it is beneficial for the realization ofultra-thin lenses. Preferably, the following conditions shall besatisfied, −6.10≤f2/f≤−4.03≤(R3+R4)/(R3−R4)≤8.41; 0.16≤d3≤0.24.

In this embodiment, the object side surface of the third lens L3 is aconvex surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the third lens L3 is f3, the curvature radiusof the object side surface of the third lens L3 is R5, the curvatureradius of the image side surface of the third lens L3 is R6 and thethickness on-axis of the third lens L3 is d5, they satisfy thecondition: 1.32≤f3/f≤5.72 by meeting this condition, it is helpful forthe system to obtain good ability in balancing the field curvature, sothat the image quality can be effectively improved; by meeting thecondition −4.53≤(R5+R6)/(R5−R6)≤−0.14 the shape of the third lens L3 canbe effectively controlled, it is beneficial for the shaping of the thirdlens L3 and bad shaping and stress generation due to extra largecurvature of surface of the third lens 13 can be avoided; when thecondition 0.11≤d5≤0.34 is satisfied, it is beneficial for therealization of ultra-thin lenses. Preferably, the following conditionsshall be satisfied, 2.11≤f3/f≤4.57; −2.83≤(R5+R6)/(R5−R6)≤−0.18;0.18≤d5≤0.27.

In this embodiment, the object side surface of the fourth lens L4 is aconcave surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has refractivepower; the focal length of the whole camera optical lens 10 is f, thefocal length of the fourth lens L4 is f4, the curvature radius of theobject side surface of the fourth lens L4 is R7, the curvature radius ofthe image side surface of the fourth lens L4 is R8 and the thicknesson-axis of the fourth lens L4 is d7, they satisfy the condition:−14.13≤f4/f≤6.04, the appropriate distribution of refractive power makesit possible that the system has better imaging quality and lowersensitivity; the condition −7.50≤(R7+R8)/(R7−R8)≤3.12 fixes the shape ofthe fourth lens L4, when beyond this range, with the development intothe direction of ultra-thin and wide-angle lens, the problem likechromatic aberration is difficult to be corrected; when the condition0.15≤d7≤0.46 is satisfied, it is beneficial for realization ofultra-thin lenses. Preferably, the following conditions shall besatisfied, −8.83≤f4/f≤4.83; −4.69≤(R7+R8)/(R7−R8)≤2.49; 0.24≤d7≤0.37.

In this embodiment, the object side surface of the fifth lens L5 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the fifth lens L5 is f5, the curvature radiusof the object side surface of the fifth lens L5 is R9, the curvatureradius of the image side surface of the fifth lens L5 is R10 and thethickness on-axis of the fifth lens L5 is d9, they satisfy thecondition: −6.55≤f5/f≤−1.61, the limitation on the fifth lens L5 caneffectively make the light angle of the camera lens flat and thetolerance sensitivity reduces; the condition 1.93 (R9+R10)/(R9−R10)≤7.81fixes the shape of the fifth lens L5, when beyond this range, with thedevelopment into the direction of ultra-thin and wide-angle lens, theproblem like off-axis chromatic aberration is difficult to be corrected;when the condition 0.10≤d9≤0.33 is satisfied, it is beneficial for therealization of ultra-thin lens. Preferably, the following conditionsshall be satisfied, −4.09≤f5/f≤−2.01; 3.09≤(R9+R10)/(R9−R10)≤6.25;0.16≤d9≤0.26.

In this embodiment, the object side surface of the sixth lens L6 is aconvex surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the sixth lens L6 is f6, the curvature radiusof the object side surface of the sixth lens L6 is R11, the curvatureradius of the image side surface of the sixth lens L6 is R12 and thethickness on-axis of the sixth lens L6 is d11, they satisfy thecondition: 0.37≤f6/f≤1.15, the appropriate distribution of refractivepower makes it possible that the system has better imaging quality andlower sensitivity; the condition 0.11≤(R11+R12)/(R11−R12)≤0.36 fixes theshape of the sixth lens L6, when beyond this range, with the developmentinto the direction of ultra-thin and wide-angle lenses, the problem likeoff-axis chromatic aberration is difficult to be corrected; when thecondition 0.22≤d11≤0.69, is satisfied, it is beneficial for therealization of ultra-thin lens. Preferably, the following conditionsshall be satisfied, 0.59≤f6/f≤0.92; 0.18≤(R11+R12)/(R11−R12)≤0.29;0.35≤d11≤0.55.

In this embodiment, the object side surface of the seventh lens L7 is aconcave surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the seventh lens L7 is f7 and the thicknesson-axis of the seventh lens L7 is d13, they satisfy the condition:−1.34≤f7/f≤−0.44, appropriate distribution of refractive power makes itpossible that the system has better imaging quality and lowersensitivity; when the condition 0.12≤d13≤0.40 is satisfied, it isbeneficial for the realization of ultra-thin lens. Preferably, thefollowing conditions shall be satisfied, −0.84≤f7/f≤−0.55;0.20≤d13≤0.32.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 4.35 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 4.16.

In this embodiment, the aperture F number of the camera optical lens isless than or equal to 1.96. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 1.92.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL:

Optical length (the distance on-axis from the object side surface to theimage surface of the first lens L1);

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd ν d S1 ∞ d0 = −0.245 R1 1.991 d1 = 0.529 nd1 1.7800 ν 156.09 R2 4.469 d2 = 0.068 R3 4.205 d3 = 0.196 nd2 1.6614 ν 2 20.41 R42.813 d4 = 0.330 R5 9.221 d5 = 0.227 nd3 1.5435 ν 3 56.09 R6 −14.169 d6= 0.099 R7 −6.171 d7 = 0.305 nd4 1.5435 ν 4 56.09 R8 −10.660 d8 = 0.296R9 5.975 d9 = 0.205 nd5 2.0316 ν 5 23.97 R10 4.049 d10 = 0.256 R11 3.914d11 = 0.460 nd6 1.5435 ν 6 56.09 R12 −2.507 d12 = 0.421 R13 −4.987 d13 =0.266 nd7 1.5348 ν 7 55.72 R14 1.963 d14 = 0.300 R15 ∞ d15 = 0.210 ndg1.5168 ν 8 64.17 R16 ∞ d16 = 0.489

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the seventh lensL7;

R14: The curvature radius of the image side surface of the seventh lensL7;

R15: The curvature radius of the object side surface of the opticalfilter GF;

R16: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens inthe embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −8.7065E−01 −8.5106E−03   3.0850E−02 −9.3548E−02   1.7114E−01−1.7765E−01   9.6459E−02 −2.1063E−02 R2   1.3797E+01 −1.6145E−01  1.1784E−01 −9.6733E−03 −1.8219E−01   2.2901E−01 −1.1688E−01  1.2872E−02 R3   1.2074E+01 −2.8041E−01   2.5358E−01 −3.4457E−02−3.0254E−01   3.0824E−01 −1.0509E−01 −2.5514E−03 R4   7.2950E+00−1.7318E−01   1.2079E−01 −3.5486E−02 −5.6943E−02 −3.6588E−01  6.5194E−01 −3.1656E−01 R5   1.2069E+01 −9.2231E−02 −3.3803E−02  2.9847E−01 −1.4132E+00   2.4882E+00 −2.2152E+00   7.9560E−01 R6  0.0000E+00 −6.6879E−02 −4.0681E−02 −1.9277E−02 −1.9334E−02 −1.4758E−02  1.4655E−03   1.0741E−02 R7   0.0000E+00 −1.4784E−02 −6.0961E−03  9.6170E−03   1.5797E−02   7.5797E−03 −1.4459E−04 −3.6225E−03 R8−9.2073E+01 −1.0661E−01   1.1987E−01 −1.3912E−01   2.1610E−02  1.7183E−01 −1.5910E−01   4.7792E−02 R9 −2.2460E+01 −3.2541E−01  3.2465E−01 −3.5264E−01   3.2293E−01 −2.5675E−01   1.4599E−01−3.7873E−02 R10 −9.6723E+01 −2.2050E−01   2.3855E−02   2.0178E−01−3.3305E−01   2.6604E−01 −1.0249E−01   1.5018E−02 R11 −3.7854E+00−1.4975E−02 −1.2296E−01   1.4040E−01 −1.2311E−01   6.4204E−02−1.7203E−02   1 8116E−03 R12 −1.5454E+01   8.5008E−02 −5.1084E−03−4.8233E−02   2.9438E−02 −8.0377E−03   1.0609E−03 −5.5510E−05 R13  1.7935E+00 −2.4156E−01   1.9582E−01 −8.9216E−02   2.5484E−02−4.3184E−03   3.9637E−04 −1.5186E−05 R14 −1.6530E+01 −1.5174E−01  9.8472E−02 −4.6048E−02   1.2952E−02 −2.1027E−03   1.8207E−04−6.4229E−06

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2) ]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point Inflexion point Inflexion point number position1 position 2 R1 0 R2 1 0.815 R3 2 0.405 0.545 R4 0 R5 2 0.385 0.955 R6 0R7 1 0.735 R8 1 0.975 R9 1 0.215 R10 2 0.255 1.425 R11 1 0.565 R12 20.505 0.855 R13 2 1.415 2.455 R14 2 0.405 2.235

TABLE 4 Arrest point Arrest point Arrest point number position 1position 2 R1 0 R2 0 R3 0 R4 0 R5 2 0.595 1.025 R6 0 R7 1 0.975 R8 11.125 R9 1 0.385 R10 1 0.455 R11 1 0.895 R12 0 R13 2 2.265 2.545 R14 20.855 2.585

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 486 m, 588 nm and656 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 588 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 9 shows the various values of the examples 1, 2 and the valuescorresponding with the parameters which are already specified in thecondition expressions.

As shown in Table 9, the first embodiment satisfies the variouscondition expressions.

In this embodiment, the pupil entering diameter of the camera opticallens is 2.05 m, the full vision field image height is 3.261 m, thevision field angle in the diagonal direction is 79.13°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens inembodiment 2 of the present invention.

TABLE 5 R d nd ν d S1 ∞ d0 = −0.212 R1 2.147 d1 = 0. 508 nd1 1.7800 ν 156.09 R2 4.195 d2 = 0. 064 R3 3.867 d3 = 0. 196 nd2 1.6614 ν 2 20.41 R42.901 d4 = 0. 287 R5 4.991 d5 = 0. 227 nd3 1.5435 ν 3 56.09 R6 12.884 d6= 0. 095 R7 −15.984 d7 = 0. 296 nd4 1.5435 ν 4 56.09 R8 −5.596 d8 = 0.314 R9 6.511 d9 = 0.219 nd5 2.0316 ν 5 23.97 R10 3.836 d10 = 0. 272 R114.150 d11 = 0. 440 nd6 1.5435 ν 6 56.09 R12 −2.547 d12 = 0. 389 R13−5.014 d13 = 0. 249 nd7 1.5348 ν 7 55.72 R14 1.975 d14 = 0.300 R15 ∞ d15= 0. 210 ndg 1.5168 ν 8 64.17 R16 ∞ d16 = 0. 590

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −8.7065E−01 −8.5106E−03   3.0850E−02 −9.3548E−02   1.7114E−01−1.7765E−01   9.6459E−02 −2.1063E−02 R2   1.3797E+01 −1.6145E−01  1.1784E−01 −9.6733E−03 −1.8219E−01   2.2901E−01 −1.1688E−01  1.2872E−02 R3   1.2074E+01 −2.8041E−01   2.5358E−01 −3.4457E−02−3.0254E−01   3.0824E−01 −1.0509E−01 −2.5514E−03 R4   7.2950E+00−1.7318E−01   1.2079E−01 −3.5486E−02 −5.6943E−02 −3.6588E−01  6.5194E−01 −3.1656E−01 R5   1.2069E+01 −9.2231E−02 −3.3803E−02  2.9847E−01 −1.4132E+00   2.4882E+00 −2.2152E+00   7.9560E−01 R6  0.0000E+00 −6.6879E−02 −4.0681E−02 −1.9277E−02 −1.9334E−02 −1.4758E−02  1.4655E−03   1.0741E−02 R7   0.0000E+00 −1.4784E−02 −6.0961E−03  9.6170E−03   1.5797E−02   7.5797E−03 −1.4459E−04 −3.6225E−03 R8−9.2073E+01 −1.0661E−01   1.1987E−01 −1.3912E−01   2.1610E−02  1.7183E−01 −1.5910E−01   4.7792E−02 R9 −2.2460E+01 −3.2541E−01  3.2465E−01 −3.5264E−01   3.2293E−01 −2.5675E−01   1.4599E−01−3.7873E−02 R10 −9.6723E+01 −2.2050E−01   2.3855E−02   2.0178E−01−3.3305E−01   2.6604E−01 −1.0249E−01   1.5018E−02 R11 −3.7854E+00−1.4975E−02 −1.2296E−01   1.4040E−01 −1.2311E−01   6.4204E−02−1.7203E−02   1 8116E−03 R12 −1.5454E+01   8.5008E−02 −5.1084E−03−4.8233E−02   2.9438E−02 −8.0377E−03   1.0609E−03 −5.5510E−05 R13  1.7935E+00 −2.4156E−01   1.9582E−01 −8.9216E−02   2.5484E−02−4.3184E−03   3.9637E−04 −1.5186E−05 R14 −1.6530E+01 −1.5174E−01  9.8472E−02 −4.6048E−02   1.2952E−02 −2.1027E−03   1.8207E−04−6.4229E−06

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in embodiment 2 of thepresent invention.

TABLE 7 Inflexion point Inflexion point Inflexion point number position1 position 2 R1 0 R2 2 0.695 0.965 R3 2 0.355 0.945 R4 2 0.715 0.845 R52 0.445 0.975 R6 1 0.295 R7 1 0.725 R8 1 0.845 R9 1 0.215 R10 1 0.255R11 1 0.535 R12 2 0.495 0.925 R13 1 1.395 R14 2 0.415 2.115

TABLE 8 Arrest point number Arrest point position 1 R1 0 R2 0 R3 2 0.835R4 0 R5 2 0.675 R6 1 0.485 R7 1 0.905 R8 1 1.045 R9 1 0.375 R10 1 0.455R11 1 0.865 R12 0 R13 1 2.125 R14 1 0.885

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 486 nm, 588 nm and656 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 588 nm passes the camera optical lens 20 inthe second embodiment.

The following table 9, in accordance with the above conditionexpressions, lists the values in this embodiment corresponding with eachcondition expression. Apparently, the camera optical system of thisembodiment satisfies the above condition expressions.

In this embodiment, the pupil entering diameter of the camera opticallens is 2.04 mm, the full vision field image height is 3.261 mm, thevision field angle in the diagonal direction is 79.32°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 9 Embodiment 1 Embodiment 2 f 3.894 3.877 f1 4.190 5.063 f2−13.457 −18.907 f3 10.270 14.777 f4 −27.504 15.620 f5 −12.751 −9.354 f62.872 2.961 f7 −2.588 −2.606 f3/f4 −0.373 0.946 (R1 + R2)/(R1 − R2)−2.607 −3.097 (R3 + R4)/(R3 − R4) 5.041 7.010 (R5 + R6)/(R5 − R6) −0.212−2.265 (R7 + R8)/(R7 − R8) −3.749 2.078 (R9 + R10)/(R9 − R10) 5.2053.868 (R11 + R12)/(R11 − R12) 0.219 0.239 (R13 + R14)/(R13 − R14) 0.4350.435 f1/f 1.076 1.306 f2/f −3.456 −4.876 f3/f 2.637 3.811 f4/f −7.0634.029 f5/f −3.274 −2.412 f6/f 0.738 0.764 f7/f −0.665 −0.672 d1 0.5290.508 d3 0.196 0.196 d5 0.227 0.227 d7 0.305 0.296 d9 0.205 0.219 d110.460 0.440 d13 0.266 0.249 Fno 1.900 1.901 TTL 3.958 3.856 n1 1.78001.7800 n2 1.6614 1.6614 n3 1.5435 1.5435 n4 1.5435 1.5435 n5 2.03162.0316 n6 1.5435 1.5435 n7 1.5348 1.5348

n7 1.5348 1.5348 It is to be understood, however, that even thoughnumerous characteristics and advantages of the present exemplaryembodiments have been set forth in the foregoing description, togetherwith details of the structures and functions of the embodiments, thedisclosure is illustrative only, and changes may be made in detail,especially in matters of shape, size, and arrangement of parts withinthe principles of the invention to the full extent indicated by thebroad general meaning of the terms where the appended claims areexpressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; thecamera optical lens further satisfies the following conditions:1≤f1/f≤1.5;1.7≤n1≤2.2;−2≤f3/f4≤2;1.7≤n5≤2.2,0.4≤(R13+R14)/(R13−R14)≤10; where f: the focal length of the cameraoptical lens; f1: the focal length of the first lens; f3: the focallength of the third lens; f4: the focal length of the fourth lens; n1:the refractive power of the first lens; n5: the refractive power of thefifth lens; R13: curvature radius of object side surface of the seventhlens; R14: the curvature radius of image side surface of the seventhlens.
 2. The camera optical lens as described in claim 1, wherein thefirst lens is made of glass material, the second lens is made of plasticmaterial, the third lens is made of plastic material, the fourth lens ismade of plastic material, the fifth lens is made of glass material, thesixth lens is made of plastic material, the seventh lens is made ofplastic material.
 3. The camera optical lens as described in claim 1,wherein first lens has a positive refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−6.19≤(R1+R2)/(R1−R2)≤−1.74;0.25≤d1≤0.79; where R1: curvature radius of object side surface of thefirst lens; R2: the curvature radius of image side surface of the firstlens d1: the thickness on-axis of the first lens.
 4. The camera opticallens as described in claim 1, wherein the second lens has a negativerefractive power with a convex object side surface and a concave imageside surface; the camera optical lens further satisfies the followingconditions:−9.75≤f2/f≤−2.302.52≤(R3+R4)/(R3−R4)≤10.52;0.10≤d3≤0.29; where f: the focal length of the camera optical lens; f2:the focal length of the second lens; R3: the curvature radius of theobject side surface of the second lens; R4: the curvature radius of theimage side surface of the second lens; d3: the thickness on-axis of thesecond lens.
 5. The camera optical lens as described in claim 1, whereinthe third lens has a positive refractive power with a convex object sidesurface; wherein the camera optical lens further satisfies the followingconditions:1.32≤f3/f≤5.72−4.53≤(R5+R6)/(R5−R6)≤−0.14;0.11≤d5≤0.34; where f: the focal length of the camera optical lens; f3:the focal length of the third lens; R5: the curvature radius of theobject side surface of the third lens; R6: the curvature radius of theimage side surface of the third lens; d5: the thickness on-axis of thethird lens.
 6. The camera optical lens as described in claim 1, whereinthe fourth lens has a refractive power with a concave object sidesurface and a convex image side surface; the camera optical lens furthersatisfies the following conditions:−14.13≤f4/f≤6.04−7.50≤(R7+R8)/(R7−R8)≤3.12;0.15≤d7≤0.46; where f: the focal length of the camera optical lens; f4:the focal length of the fourth lens; R7: the curvature radius of theobject side surface of the fourth lens; R8: the curvature radius of theimage side surface of the fourth lens; d7: the thickness on-axis of thefourth lens.
 7. The camera optical lens as described in claim 1, whereinthe fifth lens has a negative refractive power with a concave objectside surface and a convex image side surface; the camera optical lensfurther satisfies the following conditions:−6.55≤f5/f≤−1.61;1.93≤(R9+R10)/(R9−R10)≤7.81;0.10≤d9≤0.33; where f: the focal length of the camera optical lens; f5:the focal length of the fifth lens; R9: the curvature radius of theobject side surface of the fifth lens; R10: the curvature radius of theimage side surface of the fifth lens; d9: the thickness on-axis of thefifth lens.
 8. The camera optical lens as described in claim 1, whereinthe sixth lens has a positive refractive power with a convex object sidesurface and a convex image side surface; the camera optical lens furthersatisfies the following conditions:0.37≤f6/f≤1.15;0.11≤(R11+R12)/(R11−R12)≤0.36;0.22≤d11≤0.69; where f: the focal length of the camera optical lens; f6:the focal length of the sixth lens; R11: the curvature radius of theobject side surface of the sixth lens; R12: the curvature radius of theimage side surface of the sixth lens; d11: the thickness on-axis of thesixth lens.
 9. The camera optical lens as described in claim 1, whereinthe seventh lens has a negative refractive power with a concave objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−1.34≤f7/f≤−0.44;0.12≤d13≤0.40; where f: the focal length of the camera optical lens; f7:the focal length of the seventh lens; d13: the thickness on-axis of theseventh lens.
 10. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 4.35 mm.
 11. The camera optical lens as described inclaim 1, wherein the aperture F number of the camera optical lens isless than or equal to 1.96.